This printable crossword puzzle on the topic of Ecology & Evolution has 20 clues. Answers range from 6 to 12 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
living things
cells
reptiles and amphibians
parasites
living things in their environment
normal functions of living things
formation and growth
microbes
fish
bacteria
animals
mammals
classification
plants
genes and heredity
structure of living things
birds
tissues
insects
chemical process of living things